diff --git a/modules/docs/test/Volo.Docs.MongoDB.Tests/Volo/Docs/Document/DocumentRepository_Tests.cs b/modules/docs/test/Volo.Docs.MongoDB.Tests/Volo/Docs/Document/DocumentRepository_Tests.cs
index 63e69d099a..0c9c66e20d 100644
--- a/modules/docs/test/Volo.Docs.MongoDB.Tests/Volo/Docs/Document/DocumentRepository_Tests.cs
+++ b/modules/docs/test/Volo.Docs.MongoDB.Tests/Volo/Docs/Document/DocumentRepository_Tests.cs
@@ -1,7 +1,9 @@
 using Volo.Docs.MongoDB;
+using Xunit;
 
 namespace Volo.Docs.Document
 {
+    [Collection(MongoTestCollection.Name)]
     public class DocumentRepository_Tests : DocumentRepository_Tests<DocsMongoDBTestModule>
     {